・ Tokyo Funmatsu climbing chalk, Pure. ・ 330g, with the remaining bag weighing 328g. About 90% remaining. ・ Purchased about a month ago and stored in a Ziploc bag, so I don't think it has deteriorated. The following is a quote from the internet: PURE is a super fine chalk made using magnesium carbonate obtained through a unique process. It's a simple model with excellent cost performance. By producing it from magnesium hydroxide, impurities are suppressed, and environmentally friendly, superior magnesium carbonate is used. It adheres very well to the hands, has few peculiarities, and achieves a high level of sustainability. The Large Pack has a valve on the back, which allows you to remove air and store it, making it easier to fill the gaps in fingerprints and preventing a decrease in friction by protecting it from drying out.